Radio receiving set



F. 25, E936. E. F. ANDREWS RADIO RECEIVING SET Filed Feb. 9, 1931 2SheetS-Sheet l Ilulllllll Illfl F. 25, 1936. E F. ANDREWS 2,031,997

RADIO RECEIVING SET Filed Feb. 9, 1951 2 sheets-sheet 2 l t MM5HIIIIIIMIMIWIW i E i 2 /aw 20L faim 0 21 15 y 5 @l @M Patented Feb. 25,1936 l UITED STATES PATENT QFFICE 19 Claims.

This invention relates to radio receiving sets, and includes the radiocabinet; structure described in my co-pending applica-tion Serial No.263,006, filed March 20, 1928.

Among the objects of the invention are to provide a radio receiving setof generally elongated form in the vertical direction, and in which thechassis is inserted in the cabinet from the top or bottom; to provide aradio receiving set in which the cabinet is slipped over a chassis whichis adapted to. rest upon the iioor; toy provide irnproved means forsecuring the cabinet and chassis together; to provide means for theventilation of the receiving set; to provide an improved cabinetstructure for radio sets; and to provide an improved decorative surfacecovering openings in the cabinet for egress of sound and/or ventilation.

Other objects, advantages and capabilities will appear from thefollowing description of a preferred embodiment of the invention, takenin conjunction with the accompanying drawings, in which Figure 1 is afront elevational View of a radio receiving set embodying the invention;

Figure 2 is a similar view illustrating the manner in which the cabinetis applied to the chassis.

Figure 3 is a sectional detail View showing the handle construction;

Figure 4 is a sectional detail view taken on the line 4-4 of Figure 3;

Figure 5 is a transverse sectional plan View taken on the line 5-5 ofFigure 1, and on a reduced scale; and

Figure 6 is a sectional detail view taken on the line 6 6 of Figure 5.

Referring to the drawings, the radio set comprises a chassis IB, cabinetII, and handle I2. The chassis I may suitably be formed from a length ofchannel I3 which is bent to provide a vertical length I4 and ahorizontal length I5. This bending may be eifected by slitting the sideWebs and bending the main web along the line I6. The channel lengths I4and I5 are connected by corner plates Il which complete the channelmembers I4 and I5 so as to constitute a strong and rigid chassis.

The side webs of the channel I and the corner plates I 'I are rigidlysecured to a suitable base, which is shown by way of example as two feetmembers I8, each of which provides two feet I9, located at the cornersso as to provide space therebetween for the admission of air, which hasan important function in keeping the set cool,

. as will hereinafter be more fully described. The

(Cl. Z50-14) feet members I 8 carry at each end flanges 20 which maysuitably be secured to the side webs of the channel I5 or the cornerplates I 'I by rivets or other suitable means. The feet members I8provide shoulders 2I which serve as abutments for the lower edge of thecabinet.

The back of the channel Id provides a support for a loud speaker 22 ofconventional type. This back is provided with a series of openings 23adjacent the loud speaker so that sound waves generated to the rear ofthe cone may pass through the set and be projected from the rear. Abovethe loud speaker 22 the channel I 4 is provided with a shelf 24. Theshelf 24 and the back of the channel I5 serve as supports for themounting of radio tubes 25 and other parts of the set which need not beillustrated o-r described here. The shelf 24 and the back of the channelI5 are provided with openings 28 and 2 respectively which permit air toflow upwardly through the cabinet to cool the set. I prefer to mount onthe feet members I8 a plate 28 which eiectively closes the base of thechassis. This plate is mounted above the floor and is provided withopenings 29 whereby cooling air is admitted into the cabinet. Theopenings 29 are preferably arranged on the side of the plate 28 remotefrom the speaker 22. The plate Z8 has several functions. It preventschildren from access to the wiring and it provides a separator ofsubstantial dimension between the sound waves from the opposite sides ofthe lo-ud speaker, insuring improved sound reproduction, particularly inthe case of low notes.

The cabinet II comprises a metal top wall 30 which is dished so as toprovide a depending ange or skirt 3|. The top 30 may suitably besubstantially rectangular in shape, the corners being bevelled or cutaway as shown in the drawings. At each corner of the top 30 is secured,for example by riveting or other suitable means, a depending strip 32which may be of flared channel form so as to cooperate with the sides 33of the cabinet. The sides 33 may suitably be made of corrugated board,pulp Wood, or other material of good acoustic properties. Since the top30 and corner strips 32 reinforce the cabinet, the sides 33 need not bemade of strong material. The four sides 33 may be formed integrally, forexample from a piece of corrugated board and may be folded up in compactform until the set is assembled. This may be done by opening the sides33 into substantial rectangular or tube-like relation and inserting sameso as to bring its corners into engagement with the corner strips 32.The sides 33 may be iirst assembled in the form of a tube or two freeedges may be placed in abutment behind one ofthe corner strips 32. Thewalls 33 may be secured to the cabinet frame members 30 and 32 by ametal strap 34 which is connected to the corner straps 32 at their loweredges by bolts, rivets, or the like 35 which pass through the strap 313,corner straps 32 and walls 33.

The front wall 33 of the cabinet is provided with openings 3S adapted toregister with. the interior of the loud speaker cone. The opposite Wall32 is provided with openings 31 which permit the sound waves from therear of the speaker to pass outwardly through the rear wall. In order toobscure the openings 3S and 31 from view, I prefer to apply over theexterior of 'the walls 33 suitable fabric, preferably of an open weave.I have found burlap, preferably dyed to a desired color, to be verysuitable for this purpose. The burlap may be secured or applied to thewalls 33 in any suitable manner before the same are assembled in thecabinet structure. For example, I may secure the fabric to the surfaceof the wall unit by means of a suitable adhesive, bringing the exposededge or edges into a position where they will be hidden by one of thecorner strips 32. I may use glue or the like as the adhesive, or I mayuse cellulose dope, which has waterproofing as well as adhesivequalities.

The cabinet top 33 is provided with openings 38 which permit the escapeof the heated air which passes upwardly through the cabinet. Theseopenings are located near the center of the top 3U so that they may beconveniently covered or hidden by suitable means, for example the meanshereinafter more fully described. The channel member l-'i may terminateshort of the top 36 in order to permit free escape of air from bothsides of the channel, or the back of the channel may be provided withperforations 39 for that purpose.

Instead of or in addition to the openings 38, I may provide openings dnear the upper ends of the walls 33 for the escape of the heated air.These openings dil, like the openings 35 and 31, are hidden from view bythe fabric covering and need not be artistically shaped or carefullyfinished. They may suitably be cut by a die in appropriate number.

In order to avoid an excessively utilitarian appearance, the handle I2by means of which the set may be moved from place to place, ispreferably formed as an ash tray, the horizontal member 4|, which isengaged by the hand, being shaped to serve as a cigar rest. Thehorizontal member 4I gives into a vertical stem 42 which carries thetray 43. The underside of the tray 43 is provided at its center with aboss or shoulder 45 which is adapted to engage the top 3G so as tomaintain the underface of the tray in spaced relation to the top 353 sothat air may escape from the openings 33.

The boss l5 carries a downwardly extending stem 46 which is adapted toenter a central opening 41 of the top 39 so as to enter a socket 48carried by a bracket 49 which is mounted on theupper end of the channelmember I4. The socket is provided with grooves 5l) through which pins 5Icarried by the stem 'l are adapted to pass when the handle is beingapplied. The underface of the socket 48 is provided with grooves 52,located angularly with respect to the grooves i 50, adapted to receivethe pins 5I as shown in Figure 3 and lock the handle in position. 'herelation of the chassis il) and cabinet Il is such that the lower edgeof the cabinet bears against the shoulders 2i and the cabinet top 3S issprung inwardly somewhat when the handle is applied so that the cabinetbears resiliently againstthe chassis and against the boss 45 so that thepins 5I are resiliently drawn into the grooves 52. The lower portion ofthe cabinet has a snug t upon the lower chassis structure so that arigid assembly is very readily obtained.

The tray 3 is preferably of octagonal shape, having four relativelyshort sides 53 at its corners.

The tray is preferably provided with depending skirt elements 54 belowthe sides 53, which obscure the view below the tray and offerpractically no resistance to the escape of air from the openings 38.

Suitable controls are mounted on the chassis and are adapted to-beoperated through the cabinet. For example, I show Vat 55 a switch leveradapted to be passed through a suitable opening in the cabinet top. Ihave also shown a; volume control 53 which comprises a stem 51 alsoadapted to pass through an opening in the top of the cabinet. A readilyremovable knob 58, preferably of pull off and push on type, may bemounted on the stem 5'! to actuate same.

It will readily be understood that the removal of the cabinet from thechassis and the reassembly of these elements is very easily and rapidlyaccomplished. An important advantage of the invention resides in theease of the assembly of the chassis in the cabinet. The assembly of thechassis in the cabinet, even under the best factory conditions, hasheretofore been an expensive operation, ill adapted to mass productionmethods. According to the present invention this assembly is a matter ofseconds, may be accomplished without tools, and is so simple that thechassis and cabinet may be shipped separately n to be assembled later bythe retailer or purchaser.

Although the invention has been described in connection with the specicdetails of a preferred embodiment it must be understood that suchdetails are not intended to be limitative of the invention exceptinsofar as set forth in the accompanying claims.

Having thus described my invention what I claim is:

1. A cabinet for a radio receiving set comprising a rigid top, flaredchannel strips securedV to the top and extending at right anglesthereto, a substantially tubular wall member adapted to be slid intoengagement with the channel strips, and means for securing the wallmember to the channel strips.

2. A cabinet for a radio receiving set, comprising a rigid top, rigidside members extending downwardly therefrom in spaced relation, a Wallunit of fibrous material adapted to be inserted within the side members,a strap adapted to engage the lower ends of the side members, and meansextending through the side members, wall units and straps securing sametogether in as- 4. A radio receiving set comprising a chassis havingdecorative feet adapted to stand on the floor, a cabinet adapted to beapplied over the chassis from above, means associated with the feetagainst which the cabinet abuts, a handle passing through the top of thecabinet and securing same to the chassis, a control mounted on thechassis having a stem extending through the cabinet, and an exteriorknob mounted thereon, the handle and the knob being easily detachablemanually.

5. A radio receiving set cabinet comprising a top, corner posts securedthereto, a wall unit defining walls extending between said corner posts,and a fabric covering for said wall unit having a free edge concealed byone of said posts.

6. A radio receiving set comprising a chassis adapted to stand on thefloor, a loud speaker mounted adjacent one side thereof, a cabinetadapted to enclose the loud speaker, the chassis and cabinet beingadapted for the upward passage of air, and opposite sides of the cabinetbeing provided with openings for the emission of sound waves, and aplate substantially closing the bottom of the set provided with openingsfor the admission of cooling air, said openings in said plate beinglocated adjacent the side opposite the loud speaker.

7. In a radio receiving set a chassis comprising essentially a channelhaving its side flanges severed and its base bent to provide an L-shapedmember, and plates secured to the severed flanges adapted to maintainthe l.shaped relationship.

8. In a radio receiving set, a chassis oi' substantial L-shapecomprising a channel having severed iianges, the base of the channelbeing bent about the line joining said severances, plates reinforcingthe channel adjacent its corner and leg members mounted on the flangesof one portion of the channel.

9. In a radio receiving set an L-shaped chassis consisting essentiallyof two channels secured together substantially at right angles, and feetmembers secured to the flanges of one member and providing surfacesprojecting beyond said flanges so as to provide abutments for a cabinet.

v 10. In a radio receiving set a chassis comprising an L-shaped channelmember bent to provide two members at right angles, the channels of bothmembers being in free communication.

l1. In a radio receiving set a chassis comprising two channels arrangedwith their main webs in angular relation and their side webs outwardlydirected, said channels defining a continuous angular passage betweensaid side webs, and means holding said channels in said angularrelation.

12. In a radio receiving set a chassis comprising two channels arrangedwith their main webs substantially at right angles and their sidesoutwardly directed away from said right angle, said main webs havingends located adjacent each other whereby a free substantially L-shapedpassage is defined between said webs.

13. In a radio receiving set a chassis comprising two channels arrangedwith their main webs substantially at right angles and their sidesoutwardly directed away from said right angle, said main webs havingadjacent ends located adjacent each other whereby a free substantiallyL-shaped passage is dened between said webs, and reinforcing platessecured to said channels maintaining them in rectangular relation.

14. A cabinet for a radio receiving set comprising a rigid top, flaredchannel strips secured to the top and extending at right angles thereto,a wall member comprising flat portions of relatively weak materialunited at corners to form a tubular wall unit adapted to be slid withinthe channel strips with said strips overlying said corners to protectsame from injury.

15. In a radio receiving set, a chassis comprising an L-shaped channelbent to provide two members at right angles, the channels of bothmembers being in free communication, one of said channel members beingvertical, and a cone type loud speaker mounted on the vertical channeland having its cone within the vertical channel.

16. In a radio receiving set, a unitary chassis comprising a verticalchannel-shaped member, a cone type speaker carried by the vertical webof the channel member with the cone of the speaker extending into thechannel of said member, control and indicating means carried by theupper end of said channel member, a cabinet structure adapted tosurround the chassis and having an opening in a vertical wall thereof,and means for connecting the cabinet structure and chassis with the wallopening in the cabinet in registration with the channel in saidchannel-shaped member for the emission of sound from said speaker.

1'7. In a radio receiving set, a chassis comprising averticalchannel-shaped member, a cone type speaker carried by the vertical webof said channel member, control and indicating means carried by theupper end of said channel member, and a cabinet structure surroundingsaid chassis and having a sound emission wall portion extending acrossthe open side of said channel member in lateral spaced relation to thespeaker carrying web thereof.

18. In a radio receiving set, a chassis comprising a verticallyelongated channel-shaped member, a cone type speaker carried by thevertical web of said channel member, a cabinet structure surroundingsaid chassis and having a sound emission opening in a vertical wallthereof and an opening at its bottom, control and indicating meanscarried by the upper end of said channel member, and means connectingsaid cabinet structure and chassis with said sound emission openinglaterally spaced from the web of said channel member and in registrationwith said speaker.

19. In a radio receiving set, a chassis comprising a verticallyelongated channel-shaped member, a cone type speaker carried by the webof said channel member and having its cone within the vertical channelof said member, a cabinet structure surrounding said chassis and havinga wall extending across the open side of said channel member, said wallhaving openings in registry with the speaker and said channel havingopenings therein for the passage of sound therethrough, and control andindicating means carried by the upper end of said channel.

EDWARD F. ANDREWS.

